Interactive pen



FIG. 1 is a front and top perspective view of an interactive pen;

FIG. 2 is a rear and bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left-side view thereof;

FIG. 6 is a right-side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is a front and top perspective view thereof with an extended portion.

The broken lines depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for an interactive pen, as shown and described. 